Controller for solar string light



FIG. 1 is a first perspective view of a controller for solar string light showing my new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a perspective view of another state of the controller for solar string light thereof.

The broken lines shown in the drawings depict portions of the controller for solar string light that form no part of the claimed design. 

CLAIM The ornamental design for a controller for solar string light, as shown and described. 